Obviously a side opening back door restricts the area from which one can view the screen. People standing around have to gather more in something like a quarter circle instead of half circle (see pdf).
I think a side opening backdoor is not a problem per se, we would do a different design for that though. I guess the "drawer" should slide out further, the screen might be better placed at an angle instead of parallel to the car as shown on the sketch.

What about doors at the side of the car? Any possibility for that?